Razor with adjustable blade



Nov. 25, 1952 s. KOFFLER RAZOR WITH ADJUSTABLE BLADE Filed Jan. 25, 1950,14 INVENTOR.

,Yazzz zzeZ Koff Z61 BY 7w .1%W@ v A r Tom/Ex Patented Nov. 2 1952UNITED STATES PATENT OFFICE 2,618,849 I sizes ADJUSTABLE limessaifiulndfi'ir, Bimlklyii, NI Y. shenani ans, 1e50, steam; 140, 21 2cities. (01. 30-73) prising ffire we greete a, a guardat one endfwitl'ia cover element over the blade.

An important objectof the invention is t5 pieand easy'to produce, andwhich is made up of.

parts that can be readily assembled. or dismounted and securely'held inanypositioni of adjustment while the razor is needed... so that thereIislno risk of slipping or causing injury to the user.

On the drawings;

Figurel is a longitudinal section of the razor with the parts inone'position'of adjustment.

Figure 2 is a section Ofthe 'end of theraz'or in a plane at right anglesto the "plane of'section in Figure 1.

Figure 3 is a section similar to Figure 1, with a difierent adjustment.

Figure 4 is a section through the head of the razor on the same plane asin Figure 2, showing the adjustment of Figure 3; and

Figures 5, 6 and 7 are plan views of the cover plate, the guard and therazor blade, respectively.

The razor comprises a guard l and a cover plate 2 therefor. The razorblade 3 is clamped between the guard and plate, and these threeassembled parts are mounted on a handle 4, having screw threads in oneend to engage a threaded stud 5 on the under face of the cover plate 2and passing through an aperture 6 in the guard In the middle of theguard I is a depression or cavity 1 which is preferably widest at themiddle where the aperture 6 is located, and tapers towards the ends ofthe guard I. Adjacent the long transverse edges of the guard andparallel thereto are ribs 8 to seat the blade 3, plate 2 and the cuttingedges of the blade projecting beyond these ribs.

When the handle is screwed tight upon the stud 5, the cover plate 2,which has the usual shape and is concave on its under face, presses uponthe sides of the blade 3 beyond the ribs 8 and forces these edgestowards the guard I. These spacings of the edges of the blade 3 from theedges of the guard I should be different for different individuals usingthe razor to yield the best results when shaving; and to this end theare passed through openingslfl. near, therex-l tremities f. the ua d.and turne a ainst me a jd asindicated at ,ll.- Henflithespring is. C QGY ,held in, place. {Thecentral coiled part. of the spring consists of afewaturnssbut these are sufficient to assure the ,necessary pressureupon both the guard, blade and cover ,plate;-.such pressure alwaystending to move the blade and plate awayirorn the guard,

The handle has a bore [2 extending. through it from end to endtoreceivea rod l3 havinga knob I4 on its outer extremity. Inside thehandle theboreJZ and rod; or stem. l3 havescrew threaded engagementasindicated; at -15, over;a

small part of the length of these members. .,The.

bore 12 adjacent the outer end of the handle also has an enlargedshouldered portion l6 and the rod has a section adjacent the knob I twhich fits this portion. Between the section I! and the threadedportions IS the rod fits the bore l2, so that it is held steady therein.At its inner extremity the rod l3 abuts the stud 5.

The cover plate 2 has ribs l8 on its concave inner face at both sides ofthe stud 5, extending therefrom towards the ends of the plate, and atthe outer ends of these ribs are projection-s E9. The razor blade 3 hasthe usual slot 26 in the middle. When the blade is between the guard andcover plate, the ribs l8 pass through the slot 20 into the cavity 7, andthe projections 13 enter the apertures it. If the user desires anadjustment of the blade such as is shown in Figure l, the handle 4 isscrewed upon the stud 5 as far as it will go and the rod I3 is at firstretracted, so that its inner end is out of contact with the stud 5. Thecover plate is thus drawn down against the blade and its edges bend theblade 3 over the ribs 8 so that its edges are close to the guard I. Therod is then screwed in to make contact with the stud 5.

On the other hand, if an adjustment with the cutting edges of the blade3 farther from the guard I is desired, such as is illustrated in Figure3, the user first makes sure that the rod is withdrawn slightly and thenrotates the handle i so that the stud does not project so far into thebore I2. The turns of the spring 9 then expand and force the plate andblade and the guard apart. The pressure of the edges of the plate 2 onthe blade 3 is thus eased, and the elasticity of the blade tends to makeit become more nearly fiat. This is, the blade is bent to a smallerextent over the ribs 8. Then, by turning the knob 14, the inner end ofthe rod is forced against the stud, and the parts are bound in position.The razor can always be used without danger of the parts slipping orturning because the handle 4 and stem [4 press tightly against the guardand stud 5, binding the plate 2 because of the threaded engagement ofthe plate and handle, and the plate and razor are further securedagainst turning or twisting because the ribs [3 and the projections 19go through the slot 20 in the razor and the projections 19 stay in theapertures E9 of the guard.

The construction and operation are therefore quite simple. The parts canbe produced at relatively little expense, and the razor easily assembledand dismantled. The adjustment can readily and quickly be made to suitany individual user.

The plate 2 has the usual ribs or projections 2| at the corners toengage recesses 22 at the corners of the blade 3, and the edges of theguard I are of course bent away from the razor blade as indicated at 23,and the guard has slots 24 adjacent these bent edges.

The construction described is presented by way of example only, andchanges in details may be adopted without departure from the generalplan which contains the essential characteristics of the improvement.

Having described my invention, what I believe to be new is:

1. A razor comprising a guard, a cover member for securing a blade onsaid guard, the cover member having a threaded stud and the guard anopening through which the stud projects, the guard having parallel ribsat its sides for engaging the blade adjacent its cutting edges, a handlehaving a threaded bore in one end receivirig the stud and a rod in thehandle, said rod having its inner end threaded and engaged in said boreto abut the stud and hold the cover member in adjusted position, theguard having a cavity between said ribs facing said member and saidblade when the blade is in position, and a compressed spring in saidcavity for exerting pressure on said blade and member and said guard.

2. A razor comprising a guard, a cover member for securing a blade onsaid guard, the cover member having a threaded stud and the guard anopening through which the stud projects, the guard having parallel ribsat its sides for engaging the blade adjacent its cutting edges, a handlehaving a. threaded bore in one end receiving the stud and a rod in thehandle, said rod having its inner end threaded and engaged in said boreto abut the stud and hold the cover member in adjusted position, theguard having a cavity between said ribs facing said member and saidblade when the blade is in position, and a compressed spring in saidcavity for exerting pressure on said blade and member and said guard,said spring having a coiled part surrounding said studs, and having itsends attached to the guard adjacent the ends thereof.

SAMUEL KOFFLER.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS

